<template>
  <view class="container">
    <view v-if="list.length" class="coupon-list">
      <view class="coupon-item" v-for="(item, index) in list" :key="index">
        <view
          class="item-wrapper"
          :class="[
            item.state.value
              ? 'color-' + color[index % color.length]
              : 'color-gray'
          ]"
        >
          <view class="coupon-type">{{
            CouponTypeEnum[item.coupon_type].name
          }}</view>
          <view class="tip dis-flex flex-dir-column flex-x-center">
            <view v-if="item.coupon_type == CouponTypeEnum.FULL_DISCOUNT.value">
              <text class="f-30">￥</text>
              <text class="money">{{ item.reduce_price }}</text>
            </view>
            <text
              class="money"
              v-if="item.coupon_type == CouponTypeEnum.DISCOUNT.value"
              >{{ item.discount }}折</text
            >
            <text class="pay-line">满{{ item.min_price }}元可用</text>
          </view>
          <view class="split-line"></view>
          <view class="content dis-flex flex-dir-column flex-x-between">
            <view class="title oneline-hide">{{ item.name }}</view>
            <view class="bottom dis-flex flex-y-center">
              <view class="time flex-box">
                <text v-if="item.expire_type == 10"
                  >领取{{ item.expire_day }}天内有效</text
                >
                <text v-if="item.expire_type == 20">
                  <block v-if="item.start_time === item.end_time"
                    >{{ item.start_time }} 当天有效</block
                  >
                  <block v-else
                    >{{ item.start_time }}~{{ item.end_time }}</block
                  >
                </text>
              </view>
              <view
                class="receive"
                v-if="item.state.value"
                @click="receive(item.coupon_id)"
              >
                <text>立即领取</text>
              </view>
              <view v-else class="receive state">
                <text>{{ item.state.text }}</text>
              </view>
            </view>
          </view>
        </view>
      </view>
    </view>
    <empty v-if="!list.length" :isLoading="isLoading" />
  </view>
</template>

<script>
import * as CouponApi from '@/api/coupon'
import * as MyCouponApi from '@/api/myCoupon'
import { CouponTypeEnum } from '@/common/enum/coupon'
import Empty from '@/components/empty'

const color = ['red', 'blue', 'violet', 'yellow']

export default {
  components: {
    Empty
  },
  data () {
    return {
      // 枚举类
      CouponTypeEnum,
      // 颜色组
      color,
      // 优惠券列表
      list: [],
      // 正在加载中
      isLoading: true
    }
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad (options) {
    // 获取优惠券列表
    this.getCouponList()
  },

  methods: {
    /**
     * 获取优惠券列表
     * @param {bool} load 是否显示loading弹窗
     */
    getCouponList (load = true) {
      const app = this
      app.isLoading = true
      CouponApi.list({}, { load })
        .then(result => {
          app.list = result.data.list
        })
        .finally(() => (app.isLoading = false))
    },

    // 立即领取
    receive (couponId) {
      const app = this
      MyCouponApi.receive(couponId).then(result => {
        // 显示领取成功提示
        app.$success(result.message)
        // 刷新优惠券列表
        app.getCouponList(false)
      })
    }
  }
}
</script>

<style lang="scss" scoped>
.coupon-list {
  padding: 20rpx;
}

.coupon-item {
  position: relative;
  overflow: hidden;
  margin-bottom: 22rpx;
}

.item-wrapper {
  width: 100%;
  display: flex;
  background: #fff;
  border-radius: 8rpx;
  color: #fff;
  height: 180rpx;

  .coupon-type {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 10;
    width: 128rpx;
    padding: 3px 0;
    background: #a771ff;
    font-size: 20rpx;
    text-align: center;
    color: #ffffff;
    transform: rotate(45deg);
    transform-origin: 64rpx 64rpx;
  }

  &.color-blue {
    background: linear-gradient(-125deg, #57bdbf, #2f9de2);
  }

  &.color-red {
    background: linear-gradient(-128deg, #ff6d6d, #ff3636);
  }

  &.color-violet {
    background: linear-gradient(-113deg, #ef86ff, #b66ff5);

    .coupon-type {
      background: #55b5ff;
    }
  }

  &.color-yellow {
    background: linear-gradient(-141deg, #f7d059, #fdb054);
  }

  &.color-gray {
    background: linear-gradient(-113deg, #bdbdbd, #a2a1a2);

    .coupon-type {
      background: #9e9e9e;
    }
  }

  .content {
    flex: 1;
    padding: 30rpx 20rpx;
    border-radius: 8px 0 0 8px;

    .title {
      width: 400rpx;
      font-size: 32rpx;
    }

    .bottom {
      .time {
        font-size: 24rpx;
      }

      .receive {
        height: 46rpx;
        width: 122rpx;
        line-height: 46rpx;
        text-align: center;
        border: 1px solid #fff;
        border-radius: 30rpx;
        color: #fff;
        font-size: 24rpx;

        &.state {
          border: none;
        }
      }
    }
  }

  .tip {
    position: relative;
    flex: 0 0 32%;
    text-align: center;
    border-radius: 0 8px 8px 0;

    .money {
      font-weight: bold;
      font-size: 52rpx;
    }

    .pay-line {
      font-size: 22rpx;
    }
  }

  .split-line {
    position: relative;
    flex: 0 0 0;
    border-left: 4rpx solid #fff;
    margin: 0 5px 0 3px;
    background: #fff;

    &:before {
      border-radius: 0 0 16rpx 16rpx;
      top: 0;
    }

    &:after {
      border-radius: 16rpx 16rpx 0 0;
      bottom: 0;
    }

    &:before,
    &:after {
      content: '';
      position: absolute;
      width: 24rpx;
      height: 12rpx;
      background: #f7f7f7;
      left: -14rpx;
      z-index: 1;
    }
  }
}
</style>
